You know that $100 Sharper Image gift certificate you got for Christmas? The one that's now not being accepted while the company's going through bankruptcy proceedings? Turns out you can head to Brookstone, the other purveyor of fairly useless light-up gadgets that you stick up your nose to generate ozone, and get 25% off any purchase. What's even better is that you can take any gift card there, regardless of value, so feel free to trade in a $10 gift card for a quarter off a vibrating jacuzzi submarine with built-in alarm clock and personal organizer. [Yahoo]